package my.method;

import java.util.ArrayList;
import java.util.List;

public class Demo {

	public static void main(String[] args) throws InterruptedException {
		//x(null);

		Math m = null;
		System.out.println(Math.random());

		for (;;) {
			for (int i = 0; i < 9600000; i++) {
				Thread.sleep(10);
			}
		}
	}
	
	public static void x(Integer x) {
		System.out.println("x(int)");
	}

	public static void x(List<String> x) {
		System.out.println("x(List)");
	}

	public static void x(ArrayList x) {
		System.out.println("x(ArrayList)");
	}

	public static void x(Object x) {
		System.out.println("x(Object)");
	}
}
